/* ============================================================
   shopanalytics-2026 — "Conversion Lab"
   Teal #0d9488 · Geist · cool neutral · dashboard/metrics
   (NOTE: avoid generic class names used by the /tools/ inline CSS:
    .card-header .data-table .form-group .faq-* .concept-card .results)
   ============================================================ */

:root{
  --bg:#ffffff;
  --bg-2:#f5f8f8;
  --bg-3:#eaf1f1;
  --ink:#0f172a;
  --ink-2:#1e293b;
  --muted:#506072;
  --dim:#7e8ca0;
  --faint:#aeb9c7;
  --teal:#0d9488;        /* THE accent */
  --teal-2:#14b8a6;
  --teal-deep:#0f766e;
  --teal-soft:#ccfbf1;
  --teal-wash:#f0fdfa;
  --line:#e2e8ea;
  --line-2:#cfd9db;
  --ok:#15a34a;
  --warn:#d97706;
  --ink-bg:#0f172a;
  --ink-bg-2:#1e293b;
  --on-dark:#cdd6e0;
  --display:'Geist',ui-sans-serif,system-ui,sans-serif;
  --body:'Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',sans-serif;
  --r:6px;
  --wrap:1180px;
  --read:740px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.sa{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:17px;line-height:1.7;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;height:auto;display:block}
a{color:var(--teal-deep);text-decoration:none}
a:hover{color:var(--teal)}
h1,h2,h3,h4{font-family:var(--display);color:var(--ink);font-weight:700;line-height:1.14;margin:0 0 .5em;letter-spacing:-.02em}
p{margin:0 0 1.1em}
hr{border:0;border-top:1px solid var(--line);margin:2rem 0}
::selection{background:var(--teal);color:#fff}
#main-content{overflow-x:clip}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 28px}
.wrap-read{max-width:var(--read);margin:0 auto;padding:0 28px}
.kicker{font-family:var(--body);font-size:11.5px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--teal-deep);display:inline-block}
.skip-link{position:absolute;left:-9999px}
.skip-link:focus{left:8px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;z-index:1000;border-radius:var(--r)}
.screen-reader-text{position:absolute !important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:.5em;font-family:var(--body);font-weight:600;font-size:15px;padding:11px 20px;border-radius:var(--r);border:1px solid transparent;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.btn svg{width:1.05em;height:1.05em}
.btn-pri{background:var(--teal);color:#fff}
.btn-pri:hover{background:var(--teal-deep);color:#fff}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover{border-color:var(--teal);color:var(--teal-deep)}

/* ============================================================ HEADER */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(160%) blur(8px);border-bottom:1px solid var(--line);transition:box-shadow .2s}
.site-header.scrolled{box-shadow:0 1px 0 var(--line-2)}
.hd-inner{max-width:var(--wrap);margin:0 auto;padding:0 28px;height:66px;display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand .mark{width:30px;height:30px;flex-shrink:0}
.brand .name{font-family:var(--display);font-weight:800;font-size:19px;letter-spacing:-.03em;color:var(--ink)}
.brand .name b{color:var(--teal);font-weight:800}
.nav{display:flex;align-items:center;gap:22px;margin-left:auto}
.nav a{font-family:var(--body);font-size:14.5px;font-weight:550;color:var(--ink-2);position:relative;padding:4px 0}
.nav a:hover{color:var(--teal-deep)}
.nav a.active{color:var(--teal-deep)}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--teal)}
.hd-tools{display:flex;align-items:center;gap:6px;flex-shrink:0}
.icon-btn{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;background:transparent;border:1px solid transparent;border-radius:var(--r);color:var(--ink);cursor:pointer}
.icon-btn:hover{background:var(--bg-2)}
.icon-btn svg{width:19px;height:19px}
.menu-toggle{display:none}

.search-overlay{position:fixed;inset:0;z-index:90;background:rgba(15,23,42,.5);backdrop-filter:blur(3px);opacity:0;visibility:hidden;transition:opacity .2s,visibility .2s}
.search-overlay.open{opacity:1;visibility:visible}
.search-box{max-width:640px;margin:14vh auto 0;background:var(--bg);border:1px solid var(--line-2);border-radius:var(--r);padding:26px;box-shadow:0 24px 60px rgba(15,23,42,.2)}
.search-box label{font-family:var(--display);font-size:20px;font-weight:700;display:block;margin-bottom:12px}
.search-box form{display:flex;gap:10px}
.search-box input[type=search]{flex:1;min-width:0;font-family:var(--body);font-size:16px;padding:12px 14px;border:1px solid var(--line-2);border-radius:var(--r);background:#fff;color:var(--ink)}
.search-box input[type=search]:focus{outline:none;border-color:var(--teal)}

.mobile-menu{position:fixed;inset:0;z-index:95;background:var(--bg);transform:translateX(100%);transition:transform .26s ease;display:flex;flex-direction:column}
.mobile-menu.open{transform:none}
.mm-top{display:flex;align-items:center;justify-content:space-between;height:66px;padding:0 22px;border-bottom:1px solid var(--line)}
.mm-links{display:flex;flex-direction:column;padding:14px 22px;gap:2px;overflow-y:auto}
.mm-links a{font-family:var(--display);font-size:23px;font-weight:600;color:var(--ink);padding:13px 0;border-bottom:1px solid var(--line);letter-spacing:-.02em}
.mm-links a:hover{color:var(--teal-deep)}

#reading-progress{position:fixed;top:0;left:0;height:3px;width:0;background:var(--teal);z-index:100;transition:width .1s}

/* ============================================================ HOME */
.hero{padding:60px 0 14px}
.hero .kicker{margin-bottom:16px}
.hero h1{font-size:clamp(38px,6vw,64px);font-weight:800;line-height:1.04;letter-spacing:-.03em;max-width:17ch;margin:0 0 .35em}
.hero h1 .hl{color:var(--teal)}
.hero .lead{font-size:clamp(18px,2.2vw,21px);color:var(--muted);max-width:54ch;margin:0 0 26px}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap}

/* stat strip (dashboard) */
.stat-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:34px;padding-top:30px;border-top:1px solid var(--line)}
.stat{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;position:relative;overflow:hidden}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--teal)}
.stat .n{font-family:var(--display);font-size:34px;font-weight:800;letter-spacing:-.02em;color:var(--ink);line-height:1}
.stat .l{font-family:var(--body);font-size:13px;color:var(--muted);margin-top:7px}

/* tools teaser */
.section{padding:50px 0}
.section.alt{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:26px}
.sec-head h2{font-size:clamp(24px,3.2vw,32px);letter-spacing:-.025em;margin:0}
.sec-head .kicker{margin-bottom:8px;display:block}
.sec-head a{font-family:var(--body);font-size:14px;font-weight:600;white-space:nowrap}

.tool-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.tool-link{display:flex;gap:15px;align-items:flex-start;background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;transition:border-color .15s}
.tool-link:hover{border-color:var(--teal)}
.tool-link .ic{width:40px;height:40px;flex-shrink:0;border-radius:8px;background:var(--teal-wash);color:var(--teal-deep);display:flex;align-items:center;justify-content:center;border:1px solid var(--teal-soft)}
.tool-link .ic svg{width:21px;height:21px}
.tool-link h3{font-size:16.5px;font-weight:700;margin:0 0 4px;color:var(--ink)}
.tool-link p{font-size:13.5px;color:var(--muted);margin:0;line-height:1.55}
.tool-link .badge{font-family:var(--body);font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--teal-deep);background:var(--teal-wash);border:1px solid var(--teal-soft);padding:2px 7px;border-radius:100px;margin-top:8px;display:inline-block}

/* feed */
.feed-head{display:flex;align-items:baseline;justify-content:space-between;gap:14px;border-bottom:2px solid var(--ink);padding-bottom:10px;margin-bottom:28px}
.feed-head h2{font-size:20px;font-weight:800;letter-spacing:-.01em;margin:0}
.feed-head a{font-family:var(--body);font-size:13.5px;font-weight:600}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.pcard{display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:border-color .15s}
.pcard:hover{border-color:var(--line-2)}
.pcard .thumb{display:block;aspect-ratio:16/10;background:var(--bg-3);overflow:hidden}
.pcard .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.pcard:hover .thumb img{transform:scale(1.03)}
.pcard .body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.cat-pill{font-family:var(--body);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--teal-deep);margin-bottom:9px;display:inline-block}
.pcard h3{font-size:19px;font-weight:700;line-height:1.2;letter-spacing:-.015em;margin:0 0 .4em}
.pcard h3 a{color:var(--ink)}
.pcard h3 a:hover{color:var(--teal-deep)}
.pcard .ex{font-size:14.5px;color:var(--muted);margin:0 0 14px;line-height:1.6}
.pcard .meta{margin-top:auto;display:flex;align-items:center;gap:8px;font-family:var(--body);font-size:12.5px;color:var(--dim)}
.pcard .meta img{width:22px;height:22px;border-radius:100px}
.pcard .meta .au{color:var(--ink-2);font-weight:600}
.pcard .meta .sep{color:var(--faint)}

.featured{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;margin-bottom:34px;padding-bottom:34px;border-bottom:1px solid var(--line)}
.featured .ft-thumb{display:block;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:var(--bg-3)}
.featured .ft-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover}
.featured h2{font-size:clamp(26px,3.4vw,36px);line-height:1.08;letter-spacing:-.025em;margin:.2em 0 .35em}
.featured h2 a{color:var(--ink)}
.featured h2 a:hover{color:var(--teal-deep)}
.featured .ex{font-size:16.5px;color:var(--muted);margin:0 0 14px}

.pagination{margin-top:42px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:center}
.pagination .nav-links{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.pagination .page-numbers{font-family:var(--body);font-size:14px;font-weight:600;min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;padding:0 12px;border:1px solid var(--line-2);border-radius:var(--r);color:var(--ink-2)}
.pagination .page-numbers:hover{border-color:var(--teal);color:var(--teal-deep)}
.pagination .page-numbers.current{background:var(--teal);color:#fff;border-color:var(--teal)}
.pagination .page-numbers.dots{border-color:transparent}

/* ============================================================ SINGLE / PAGE */
.crumbs{font-family:var(--body);font-size:12.5px;color:var(--dim);margin-bottom:18px}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--teal-deep)}
.crumbs .sep{color:var(--faint);margin:0 5px}
.crumbs .cur{color:var(--ink-2)}

.art-head{padding:42px 0 4px}
.art-head .cat-pill{margin-bottom:6px}
.art-head h1{font-size:clamp(30px,4.6vw,48px);line-height:1.07;letter-spacing:-.03em;margin:.1em 0 .5em}
.art-meta{display:flex;align-items:center;gap:9px;font-family:var(--body);font-size:14px;color:var(--dim);margin-bottom:4px}
.art-meta img{width:30px;height:30px;border-radius:100px}
.art-meta .au{color:var(--ink-2);font-weight:600}
.art-meta .sep{color:var(--faint)}
.art-cover{margin:24px 0 0;border-radius:var(--r);overflow:hidden;border:1px solid var(--line);background:var(--bg-3)}
.art-cover img{width:100%;max-height:540px;object-fit:cover}
.art-wrap{padding:32px 0 8px}

/* prose */
.prose{font-size:18px;line-height:1.78;color:var(--ink-2)}
.prose p{margin:0 0 1.25em}
.prose h2{font-size:28px;font-weight:700;margin:1.7em 0 .5em;letter-spacing:-.025em}
.prose h3{font-size:22px;font-weight:700;margin:1.5em 0 .4em;letter-spacing:-.015em}
.prose h4{font-size:18px;font-weight:700;margin:1.4em 0 .3em}
.prose a{color:var(--teal-deep);text-decoration:underline;text-decoration-color:var(--teal-soft);text-underline-offset:3px;text-decoration-thickness:1.5px}
.prose a:hover{text-decoration-color:var(--teal)}
.prose .sa-keep-reading{margin:2.4em 0 0;padding-top:1em;border-top:1px solid var(--line);font-size:.95em;color:var(--muted)}
.prose .sa-keep-reading strong{color:var(--teal-deep)}
.prose strong{font-weight:700;color:var(--ink)}
.prose ul,.prose ol{margin:0 0 1.25em;padding-left:1.3em}
.prose li{margin:.4em 0}
.prose ul li::marker{color:var(--teal)}
.prose blockquote{margin:1.6em 0;padding:18px 22px;border-left:4px solid var(--teal);background:var(--teal-wash);border-radius:0 var(--r) var(--r) 0;font-size:18px;color:var(--ink-2)}
.prose blockquote p{margin:0 0 .4em}
.prose blockquote p:last-child{margin:0}
.prose img,.prose figure{border-radius:var(--r)}
.prose figure{margin:1.8em 0}
.prose figure img{border:1px solid var(--line)}
.prose figcaption{font-family:var(--body);font-size:13px;color:var(--dim);text-align:center;margin-top:8px}
.prose code{font-family:'Geist Mono',ui-monospace,Menlo,Consolas,monospace;font-size:.86em;background:var(--bg-3);padding:.12em .4em;border-radius:4px;color:var(--teal-deep);overflow-wrap:anywhere}
.prose pre{background:var(--ink);color:#e6f0ef;padding:18px 20px;border-radius:var(--r);overflow-x:auto;margin:1.6em 0;font-size:14px;line-height:1.6}
.prose pre code{background:none;color:inherit;padding:0}
.prose table{width:100%;border-collapse:collapse;margin:1.6em 0;font-family:var(--body);font-size:15px}
.prose th,.prose td{border:1px solid var(--line-2);padding:10px 13px;text-align:left}
.prose th{background:var(--bg-2);font-weight:700}
.prose figure.wp-block-table{overflow-x:auto}

/* author + postnav */
.afoot{padding:30px 0}
.authorbox{display:flex;gap:18px;align-items:flex-start;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:22px 24px}
.authorbox img{width:58px;height:58px;border-radius:100px;flex-shrink:0}
.authorbox h3{font-family:var(--display);font-size:19px;font-weight:700;margin:0 0 2px}
.authorbox .role{font-family:var(--body);font-size:12px;letter-spacing:.04em;text-transform:uppercase;color:var(--teal-deep);margin-bottom:8px;font-weight:600}
.authorbox p{font-size:15px;color:var(--muted);margin:0 0 .5em}
.authorbox a{font-family:var(--body);font-size:14px;font-weight:600}
.postnav{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;margin-top:8px}
.postnav a{display:flex;flex-direction:column;gap:5px;padding:18px 20px;background:var(--bg);min-width:0}
.postnav a:hover{background:var(--bg-2)}
.postnav .next{text-align:right;align-items:flex-end}
.postnav .lbl{font-family:var(--body);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.postnav .ti{font-family:var(--display);font-size:16px;font-weight:700;color:var(--ink);line-height:1.25;letter-spacing:-.01em}
.postnav a:hover .ti{color:var(--teal-deep)}

/* generic page (block content) */
.page-head{padding:42px 0 0;text-align:center}
.page-head .kicker{margin-bottom:10px}
.page-head h1{font-size:clamp(30px,4.8vw,48px);letter-spacing:-.03em;margin:0}
.page-body{padding:30px 0 10px}
.page-prose{max-width:860px;margin:0 auto}

/* ---- TOOL pages: full width, no chrome (tools bring their own styling) ---- */
.tool-wrap{max-width:var(--wrap);margin:0 auto;padding:28px 28px 10px}
body.sa-tool-page .crumbs{max-width:var(--wrap);margin:0 auto 0;padding:24px 28px 0}

/* ============================================================ ARCHIVE / SEARCH / 404 */
.arch-head{padding:48px 0 0;border-bottom:1px solid var(--line);margin-bottom:30px}
.arch-head .kicker{margin-bottom:10px}
.arch-head h1{font-size:clamp(30px,4.6vw,46px);letter-spacing:-.03em;margin:0 0 .25em}
.arch-head p{color:var(--muted);font-size:17px;max-width:60ch;margin:0 0 26px}
.empty{padding:70px 0;text-align:center}
.empty h2{font-size:28px;margin-bottom:.3em}
.empty p{color:var(--muted)}
.notfound{padding:88px 0;text-align:center}
.notfound .big{font-family:var(--display);font-size:120px;line-height:1;color:var(--teal);font-weight:800;letter-spacing:-.04em}
.notfound h1{font-size:34px;margin:.1em 0 .3em}
.notfound p{color:var(--muted);max-width:46ch;margin:0 auto 26px}

/* ============================================================ COMMENTS */
.comment-list{list-style:none;margin:0 0 24px;padding:0}
.comment-list li{margin:0 0 16px}
.comment-list .children{list-style:none;margin:14px 0 0;padding-left:22px}
.comment-body{background:var(--bg-2);border:1px solid var(--line);border-radius:var(--r);padding:15px 18px}
.comment-author{font-family:var(--body);font-weight:600;font-size:14.5px;color:var(--ink)}
.comment-author .avatar{border-radius:100px;margin-right:9px;vertical-align:middle}
.comment-metadata,.comment-meta{font-family:var(--body);font-size:12px;color:var(--dim)}
.comment-content{margin-top:8px;font-size:16px}
.reply a{font-family:var(--body);font-size:12.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--teal-deep)}
.comment-form p{margin:0 0 14px}
.comment-form label{display:block;font-family:var(--body);font-size:13.5px;font-weight:600;color:var(--muted);margin-bottom:4px}
.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url],.comment-form textarea{width:100%;max-width:100%;box-sizing:border-box;font-family:var(--body);font-size:15px;padding:11px 13px;border:1px solid var(--line-2);border-radius:var(--r);background:#fff;color:var(--ink)}
.comment-form input:focus,.comment-form textarea:focus{outline:none;border-color:var(--teal)}
.comment-form textarea{min-height:130px;resize:vertical}

/* ============================================================ FOOTER */
.site-footer{background:var(--ink-bg);color:var(--on-dark);margin-top:64px}
.ft-top{max-width:var(--wrap);margin:0 auto;padding:56px 28px 40px;display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:42px}
.ft-brand .name{font-family:var(--display);font-size:20px;font-weight:800;color:#fff;letter-spacing:-.03em}
.ft-brand .name b{color:var(--teal-2)}
.ft-brand p{color:#94a3b8;font-size:15px;max-width:38ch;margin:14px 0 0;line-height:1.65}
.ft-col h4{font-family:var(--body);font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#7c8a9c;margin:0 0 14px}
.ft-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:9px}
.ft-col a{color:var(--on-dark);font-size:15px}
.ft-col a:hover{color:#fff}
.ft-bottom{border-top:1px solid #243044}
.ft-bottom .wrap{display:flex;justify-content:space-between;align-items:center;padding-top:18px;padding-bottom:18px;flex-wrap:wrap;gap:10px}
.ft-bottom p{margin:0;color:#7c8a9c;font-size:13px}

/* ============================================================ RESPONSIVE */
@media(max-width:980px){
  .tool-grid{grid-template-columns:1fr}
  .card-grid{grid-template-columns:1fr 1fr}
  .featured{grid-template-columns:1fr;gap:20px}
  .featured .ft-thumb{order:-1}
  .ft-top{grid-template-columns:1fr 1fr;gap:34px}
  .ft-brand{grid-column:1 / -1}
}
@media(max-width:680px){
  body.sa{font-size:16px}
  .nav{display:none}
  .menu-toggle{display:inline-flex}
  .hd-inner{height:60px;gap:14px}
  .stat-strip{grid-template-columns:1fr;gap:12px}
  .card-grid{grid-template-columns:1fr}
  .hero{padding:44px 0 10px}
  .section{padding:38px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:6px}
  .prose{font-size:17px}
  .prose h2{font-size:24px}
  .authorbox{flex-direction:column;gap:14px}
  .postnav{grid-template-columns:1fr}
  .postnav .next{text-align:left;align-items:flex-start}
}
@media(max-width:440px){
  .wrap,.wrap-read,.tool-wrap{padding-left:18px;padding-right:18px}
  .hd-inner{padding:0 18px}
  .hero h1{font-size:33px}
}